Air-control valve



y F. J; SKONIER AIR CONTROL VALVE File'd March 18.14927 2 Sheets-Sheet 1 May 31; 1927.

F. J. SKONIER AIR CONTROL VALVE Filed March 18, 1927 2 Sheets-Sheet 2 generally Y-sha-ped structure having an air Patented ay 31, 1927.

FRANK J. sxonmn. or AL'roonA. PENNSYLVANIA.

' AIR-CONTROL VALVE.

-Appllcativm filed March 18,1927. SerialNo. 176,568.

The invention relates to a novel construction of valve device adapted to control the circulation or supply or the circulation and supply of the a1r in refrigeratingvlrying or similar apparatus, the successful operation of which requires various changes in the pneumatic conditions within the refrig crating, drying or similar chamber or receptacle. The invention is illustrated in the accompanying drawings, in which Fig. 1 illustrates the apparatus as applied to a typical refrigerating or drying system.

Fig. 2 is an enlarged sectional elevation of the valve device.

Fig. 3 is a cross section on line 33 of Fig. 2.

Fig. 4 is an inverted perspective of the valve device.

Referring to the drawings, 10 indicates' the casing of the valve, pre l'erably consisting of sheet metal sections. welded. soldered or otherwise connected together to form a pressure inlet 11 at one end, an atmospheric inlet 12 at the opposite end, a supply outlet 13 disposed laterally of inlet 12 and an exhaust outlet 14 similarly disposed on the opposite side of inlet 12, the cross s'ection of the elements of the casing coir=tituting the two inlets and outlets preferably being rectangular, whereby the construction of the casing is facilitated and the installation and operation of the cooperating butterfly valve member 16 a simplified and assured.

Said butterfly valve membercomprises a flat plate of metal provided with a pivotal shaft or pintle 15 intermediate its ends and journaled in the opposite walls of the casing 10 and provided with an exterior operating handle 17. which is, preferably disposed in substantial parallelism with the plane of valve 16 and thereby indicating the various positions of the valve with relation to the several passageways of the easing. 'The upper edge of the valve is adapted'to engage the inclined side walls of the valve. casing, when the valve is moved to either of its extreme positions, as shownin full and dotted lines in' Fig, 2. jT he lower end of the valve is adapted to engage a stop plate 19 secured to the' inner 'walliof the casing adjacent the supply outlet opening 13.

Connected to the inner wall of the exhaust outlet is a plate 18, which is also secured to thefront and back walls of the supplemental plate 18 is to form a wall of the passageway connecting the air pressure inlet section and the exhaust outlet section ot the valve and tobring about the proper functioning of the valve mechanism,'when the latter is employed to effect combined circulation and supply of air, as will be hereinafter explained.

A typical application of the invention is illustrated in Fig. 1, in which 1 indicates a chamber or con'lpartnient of a cooling, refrigerating or drying system in \vhieh the atmospheric conditions must be varied from time to time to effect the best results, as, for example, a continuous exhaust of air from the chamber 1 and a concurrent supply of atmospheric air to said chamber, or a continuous circulation of air through the chamber, or an accurately regulated combination of the two operations, to wit, a partial exhaustion of the 'air from the chamber. thecomplementary supply of atmo's-- pheric air and a simultaneous, continuous circulation of part of the air in the compartment 1. To effect these results with cer tainty and accuracy. the chamber 1 is provided with the typical arrangement of ex haustpipes .2 near the ceiling, which open into an exterior pipe 3, which is connected to the intake side. of an exhaust fan or e'qnivalent apparatus '4, the exhaust end of which is connected to the air. pressure. inlet. 11 of the. valve mechanism. A supply pipe 20 connected to the supply outlet '13 of the valve mechanism is connected to the lower part of the chamber'l. venience and sanitary precaution, an atmospheric inlet pipe 21 is conn'ectedto the inlet 12 of the valve and extends outside of the building. preferably above the roof; simi; larly and for the same reasons an exhaust pipe 22 isrco'nnected to exhaust outiet H of the valve and-is-extended abovcthe roof of the building.. The operation of'the apparatus is as follows: lVhenthe valve 16 is adjusted to the position'sliown in Figs. 1 and'2, the exhaust fan 4"w-ithdraws the air from the chamber. '1 and forces the same through the controlling valve mechanism out of the exhaust port '14 th reofto the As a matter o'l'conatmosphere through the exhaust pipe 22.

This produces a reduction oftheatmos-.

same bodv of air through the chamber 1 and this is effected by shifting the valve 16 to its opposite extreme. position, as indicated in the lncllned dotted lines 1n Fig. 2, 1n

' which the upper edge of the valve 16 engages theinclined wall of the valve casing and the lower end of the valve engages the abutment plate 9. This cuts off communication with the exhaust port 14 and the atmospheric air inlet 12 and establishes direct communication between theair pressure inlet 11 and the supply outlet 13, so that the air withdrawn from the chamber l'by the fan blower 4 is forced back into the chamber 1 byway of supplyoutlet 13 and pipe 2-0. Under certain conditions of operatlon, it is found desirable and necessary to effect a continuous circulation of part of the air in chamber 1 and a simultaneous exhaust of part of the air from said chamber with a concurrent supply of fresh atmospheric air to the chamber and the balance between the circulated :ir' and the freshair supply lnustbe effected with extreme accuracy to produce the best results.

These conditions are brought about'by adjusting the valve 16'to an' intermediate position, as indicated by the vertical dotted lines in Fig. 2, in which the valve occupies an intermediate position although it is obvious that it may. be adjusted to any desired intermediate position between the extremes,

thereby regulating the necessary balance between. the circulating air and the partial exhaust and compensating v supply of fresh air. When the valve has been adjusted to any such 4 intermediate position, the fans blower 4 withdrawing the air from chamber 1 forces a part of the same through the valve out ofthe exhaust opening 14, the portion of air so exhausted being determined by the relative positionof. the valve 16, the remain ing portion 'ofthe air beingdirected past the upper edge of the valve 16 through the supply outlet 13' and pipe 20 back into chamber '1, thereby. effectlng a continuous .ci'rculatio'n of thi ortion of the air. As

the amount-of air i ficientto maintain the/normal pressure -in chamber 1', thefdeficit-iS supplied byair entering byway of; pipe 21 and air inlet 12p'a's'tthe lower end of valve-16,the nce.

by supply outlet 13 'andpipe 20 into, the

chamber conditions of opcirculation is not suf-,

mediate position. In testimony whereof I aflix'my signaand then through exhaust outlet and the atmospheric inlet 12, which, of course, would destroy the desired balance between .the circulating air and the partial exhaust of used air and the compensated supply of fresh air.

\Vhat- I claim is:

1. An air control valve device comprising a casing having an air pressure inlet at one end, an atmospheric air inlet and supply and exhaust outlets at the other end, said exhaust outlet having an inner wall extending within the casing, and a plate valve pivoted within the casing at the end of said wall and adapted to connect the air pres ure inlet with the exhaust outlet and the atmospheric air inlet with "the supply outlet or to connect the air pressure inlet with the supply outlet in the respective extreme positions of the valve, and to effect the several stated connections simultaneous:

ly when the valve tion. I

- 2.- An air control valve device comprising a casing having oppositely disposed air presis in intermediate posisureand atmospheric air inlets, supply andexhaust outlets disposed laterally of and ad acent the atmospheric air inlet, a centrally pivoted butterfly valve in the casing' adapted in one extreme position to establish connection between the air pressure mlet and theexhaust outlet and between the at-' mospheric air inlet and the supply outlet and in its other extreme position'to establish connection between the air pressure inlet and the supply outlet, and a baflle plate ex-- tending fromone wall of the exhaust outlet to the axis'of the valve, whereby when the valve is in intermediate position theseveral stated connections Wlll be simultane ously established. v 3 An air control valve device comprising atmospheric air inlet at opposite ends eof, laterally disposed supply and exhaust outlets, a valve plate pivoted inter- ,supply outlet in one position, and .to close asing having an air pressure inlet and the exhaust outlet and connect the air pres- 1 sure inlet and supply outlet in another posi-.

ture.

@FRANK -Ji sKoNrE -tion, and a wall extending'from the axis of the valve to the exhaust outlet, whereby the 

